Meeting the new efficiency standards for power drive systems

Improving the efficiency of electric motors has been an on-going objective across the world, with several standards now in place to help achieve this goal. However, it is generally recognised that a broader view is needed to fully maximise the efficiency of the entire drive train. This requires engineers to take account of the efficiencies of the starter systems, as well as the equipment attached to the motor; which has led to the introduction of a new standard, EN50598. Yasar Yüce, Product Manager at Bauer Gear Motor, looks at the reasoning for the new standard as well as the implications for manufacturers and end users. From January 1st 2015 the latest efficiency regulations for electric motors came into force in Europe under Regulation 640/2009, whereby any new installation using a motor between 7.5 kW and 375 kW must use either an IE3 rated motor or an IE2 motor installed with a variable frequency drive (VFD). This approach is focussed on improving the efficiency of a specific product and reducing the losses associated with it alone. Specifiers and end users need to decide which option as a combination will provide the most efficient solution for their application; an IE3 motor has a clearly specified efficiency rating at its rated speed and at 50%, 75% and 100% load. An application which requires variable speed adjustments and different loadings cannot be evaluated at present with the available product performance data. A specifier or an end user is currently unable to compare the different competitive components of the drive system and finally choose the most efficient motor and inverter components. A similar situation...

Drive chain reliability key to maintaining quarry performance

The quarrying and mining industries have some of the most arduous working conditions for plant and equipment, which makes designing a product that will endure the environment and deliver reliable performance a difficult task. With tight margins and continuous production cycles, downtime for maintenance work needs to be kept to a minimum. Derek Mack, UK Sales Director for Tsubaki Europe, looks at the challenges and some possible solutions. The process of extracting materials from the earth requires heavy duty equipment, the scale of which is increasing steadily in an effort to reduce operating costs and increase efficiency and productivity. However, in the event of a piece of this larger equipment requiring unscheduled maintenance work, the lost production costs increase rapidly, making reliability more important than ever. The tough challenges of designing products to operate effectively in the quarrying industry have, thankfully, remained relatively constant; but the technology is constantly evolving. One of the main issues to address is the abrasive nature of the materials and the dust generated by the application, which can quickly attack moving parts such as drive chains and sprockets. As an example, the drive system used on many bucket elevators involves heavy duty chains and sprockets, which can often have a short service life caused by the ingress of abrasive dust between the pins and bushings of the chain. The increased levels of wear leads to chain elongation and damage to the sprocket teeth, all of which will have to be replaced; incurring loss of production and increased maintenance costs. Design has been shown to double the service life of the chain With considerable experience...

Tsubaki appoints Nick Cummings as Sales Manager for central England and Wales

Nick Cummings has been appointed as Area Sales Manager for Tsubakimoto, covering the central belt of England and Mid-North Wales. Nick will be responsible for growing sales of drive chain and power transmission products for OEM and MRO applications. With many years of engineering experience under his belt, Nick is looking forward to using his knowledge to work closely with customers to develop solutions which will deliver long term reliability and efficiency benefits. Prior to his appointment at Tsubaki, Nick has a strong background in engineering related sales and energy efficiency consultancy. He has previously worked with the Carbon Trust, carrying out site-surveys for industrial businesses to assess their energy usage and recommend solutions to reduce their carbon footprint and their running costs. As an application engineer for a leading engineering services provider, Nick learnt the importance of considering long term performance and Total Cost of Ownership (TCO) when making a specification decision. Nick comments: “Tsubaki’s philosophy of offering customers a solution that is both ecologically and economically beneficial over the long term fits perfectly with my background, which is why I wanted to work with the company. I am a solutions seller with the experience to work with clients’ engineers to deliver real-term and quantifiable savings within their application. Tsubaki’s range of premium drive chain and power transmission products allows me to do this, rather than simply trying to make a sale based on outright purchase cost instead of long term performance.” Derek Mack, UK Sales Director, adds: “Nick will be responsible for working closely with our existing clients in all industries as well as reaching out to...
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The one leading voice for the Fluid & Power Transmission Industry - Saturday, December 16th 2017